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  • Brainly User
2014-08-16T13:28:14+05:30
Nostoc is used as biofertiliser
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2014-08-16T13:36:19+05:30

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1. Not a biofertilizer
2. A biofertilizer
3. A biofertilizer.
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2014-08-16T14:26:54+05:30
nostoc,spirogyra are used as biofertilizers

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